PXD047332 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | RNF212B E3 ligase is essential for crossover designation and maturation during male and female meiosis in the mouse |
Description | Meiosis, a reductional cell division, relies on precise initiation, maturation and resolution of crossovers (COs) during prophase I to ensure the accurate segregation of homologous chromosomes during metaphase I. This process is regulated by the interplay of RING-E3 ligases such as RNF212 and HEI10 in mammals. In this study, we characterized a novel RNF212B E3 ligase. RNF212B colocalizes and interacts with RNF212 forming small foci along meiotic chromosome cores from zygonema onwards. These consolidate into larger foci at maturing COs, colocalizing with HEI10, CNTD1, and MLH1 at pachynema in a synapsis-dependent and DSB-independent manner. Genetically, RNF212B focus formation depends on the presence of Rnf212 and Msh4 but not on Hei10 and Cntd1, while the unloading of RNF212B at the end of pachynema is dependent on Hei10 and Cntd1. Rnf212b-deficient and enzymatically-dead mutant mice exhibit modest synapsis defects, a reduction in localization of pro-CO factors (MSH4, TEX11, RPA, MZIP2) and absence of MLH1 foci, indicative of nascent COs, resulting in metaphase I cells with mostly univalent chromosomes. Double mutants for Rnf212b and Rnf212 exhibit an identical phenotype to that of Rnf212b single mutant males, while double heterozygous demonstrate a dosage-dependent reduction in the number of COs relative to the single mutant, indicating a functional interplay between both paralogs. SUMOylome analysis of testis from Rnf212b mutants and pull-down analysis of Sumo- and Ubiquitin-tagged HeLa cells, suggest that RNF212B is a novel E3 ligase with Ubiquitin activity, serving as a crucial factor for CO designation and maturation. This conserved pathway holds physiological significance for understanding the biology and homesotais of CO and its role in shaping meiotic recombination landscape. |
HostingRepository | PRIDE |
AnnounceDate | 2024-05-31 |
AnnouncementXML | Submission_2024-05-31_02:27:39.339.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Román González-Prieto |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | phosphorylated residue |
Instrument | Orbitrap Fusion Lumos |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2023-11-28 07:01:10 | ID requested | |
⏵ 1 | 2024-05-31 02:27:39 | announced | |
Publication List
Keyword List
submitter keyword: Meiosis, SUMO, Ubiquitin |
Contact List
Roman Gonzalez Prieto |
contact affiliation | Andalusian Center for Moelcular Biology and Regenerative Medicine (CABIMER), University of Sevilla, Spain |
contact email | roman.gonzalez@cabimer.es |
lab head | |
Román González-Prieto |
contact affiliation | Andalusian Center for Regenerative Medicine and Cell Biology, CABIMER, University of Seville |
contact email | roman.gonzalez@cabimer.es |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD047332
- Label: PRIDE project
- Name: RNF212B E3 ligase is essential for crossover designation and maturation during male and female meiosis in the mouse